<?php
/**
 * crcl/base
 *
 * Copyright 2013 CRCL - André Sabosch - info@crcl.de
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * System related functions
 */

namespace crcl\base;

interface ITemplate
{
  /**
   * factory: returns template object with loaded template from file
   *
   * @static
   * @param   $sFile      string  File with template
   * @return  $oTemplate  ITemplate
   */
  public static function fromFile($sFile);

  /**
   * factory: returns template object with loaded template from string
   *
   * @static
   * @param   $sTemplate  string  template content
   * @return  $oTemplate  ITemplate
   */
  public static function fromString($sTemplate);

  /**
   * Sets Values to template
   *
   * @param $aValues
   */
  public function setValues($aValues);

  /**
   * Returns compiled template
   *
   * @return string
   */
  public function compile();
}

class Template implements ITemplate
{
  public static function fromFile($sFile)
  {
    $content = @\file_get_contents($sFile);
    if ($content === \FALSE)
    {
      throw new template\Exception(
        template\Exception::ERROR_TEMPLATE_MISSING_FILE,
        array('file' => $sFile));
    }

    return self::fromString($content);
  }

  public static function fromString($sTemplate)
  {
    $oTemplate = new Template($sTemplate);
    return $oTemplate;
  }

  public function setValues($aValues)
  {
    $this->aValues = $aValues;
  }

  public function compile()
  {
    $oCompiler = template\Compiler::fromString($this->sTemplate);
    $oCompiler->setValues($this->aValues);
    $sContent = $oCompiler->compile();
    return $sContent;
  }

  /** PRIVATE *************************************************************************************/

  private $sTemplate = '';
  private $aValues = array();

  private function __construct($sTemplate)
  {
    $this->sTemplate = $sTemplate;
  }
}